Reporter Carl Kolchak, now in Seattle, Washington (having been run out of Las Vegas at the end of the last film) is assigned to the story of a series of killings, in which the victims, all exotic dancers, are strangled, their necks crushed, then drained of a few ounces of blood. He discovers that there was a similar rash of killings twenty-one years prior. Then he learns of another twenty-one years before that. It turns out that they have been occurring every twenty-one years for about a century.